Toyota Lexus Is250, Is220D. Gse20 Ale20HEATER COMBUSTION TYPE POWER HEATER SYSTEM PRECAUTION PARTS LOCATION SYSTEM DIAGRAM SYSTEM DESCRIPTION HOW TO PROCEED WITH TROUBLESHOOTING PROBLEM SYMPTOMS TABLE TERMINALS OF ECU DIAGNOSIS SYSTEM DIAGNOSTIC TROUBLE CODE CHART 010 072 011 074 012 090 014 091 017 092 015 093 016 094 020 095 021 096 022 097 025 098 030 099 031 047 032 048 034 049 060 050 061 051 064 052 065 054 071 056 Power Heater Alternator Circuit Power Heater Fuel Pump Circuit Power Heater Switch Circuit ECU Power Source Circuit HEATER SWITCH (for 2AD-FHV) ON-VEHICLE INSPECTION HEATER ASSEMBLY (for 2AD-FHV) COMPONENTS REMOVAL INSTALLATION HEATER EXHAUST PIPE (for 2AD-FHV) COMPONENTS REMOVAL INSTALLATION HEATER FUEL PUMP (for 2AD-FHV) ON-VEHICLE INSPECTION